Which term is used to describe the state of having two working eyes?

The term that describes the state of having two working eyes is "binocular." This term is derived from "bi," meaning two, and "ocular," relating to the eyes. Binocular vision is essential for depth perception and enhances the ability to judge distances accurately since it allows the brain to combine the slightly different images seen by each eye into one cohesive image.

In contrast, "monocular" refers to the use or capability of one eye, which does not provide the same depth perception as binocular vision. "Unilateral" signifies something that affects only one side or one eye. Meanwhile, "bilateral" typically refers to two sides but doesn't specifically pertain to eye function in the same context as binocular, which directly refers to the pair of eyes working together.